Contents
- Weather in May
- Frequently asked questions
- Average temperature in May
- Average pressure in May
- Average wind speed in May
- Average humidity in May
- Average rainfall in May
- Average rainfall days in May
- Average snowfall in May
- Average snowfall days in May
- Average sea temperature in May
- Average daylight in May
- Average sunshine in May
- Average sunshine days in May
- Average UV index in May
- Average cloud cover in May
- Average visibility in May
Weather in May
Temperature
May in Cos Cob, Connecticut, witnesses an increase in the average high-temperature, moving from a moderate 55.4°F (13°C) in April to a comfortable 66.2°F (19°C). May nights in Cos Cob cool down to an average low-temperature of 53.1°F (11.7°C).Humidity
February, May and December, with an average relative humidity of 75%, are the most humid months.Rainfall
In Cos Cob, in May, during 17.5 rainfall days, 3.11" (79mm) of precipitation is typically accumulated. Throughout the year, there are 165.6 rainfall days, and 37.64" (956mm) of precipitation is accumulated.Snowfall
In Cos Cob, snow does not fall in May through October.Ocean temperature
In May, the average ocean temperature in Cos Cob is 51.4°F (10.8°C).Note: Engaging in a swim in 51.4°F (10.8°C) can threaten life. Brief exposure to 55.4°F (13°C) waters is uneasy, and submersion below 50°F (10°C) can lead to cold shock and disrupted breathing patterns, varying by individual.
Daylight
In Cos Cob, the average length of the day in May is 14h and 30min.On the first day of the month, sunrise is at 5:51 am and sunset at 7:51 pm. On the last day of May, sunrise is at 5:24 am and sunset at 8:19 pm EDT.
Sunshine
In Cos Cob, the average sunshine in May is 8.7h.UV index
The average daily maximum UV index in May is 5. A UV Index of 3 to 5 symbolizes a medium vulnerability from exposure to the Sun's UV radiation for average individuals.Note: In May, an average UV index of 5 transforms into the following instructions:
Be vigilant - Preventing sunburn is recommended. Avoid the Sun's strongest UV rays by seeking shade and limiting exposure during midday. Shield yourself from the harmful effects of UV radiation with sun-protective attire, a hat, and quality sunglasses. Warning! The reflection from snow can nearly magnify the Sun's UV radiation twofold.
Published by: Weather U.S. | About Us
Data Sources | Weather Forecasting & Climate
Frequently asked questions
What is the temperature in May in Cos Cob?
What is the most humid month in Cos Cob?
What is the average humidity in May in Cos Cob?
How much does it rain in Cos Cob in May?
When it does not snow in Cos Cob?
Does it snow in Cos Cob in May?
What is the water temperature in May in Cos Cob?
What is the average length of the day in May in Cos Cob?
When is the sunrise / sunset in May in Cos Cob?
How long on average sun shines in May in Cos Cob?
How high is the UV index in May in Cos Cob?
Average temperature in May
Cos Cob, CT
- Average high temperature in May: 66.2°F
The warmest month (with the highest average high temperature) is July (82°F).
The month with the lowest average high temperature is January (35.8°F).
- Average low temperature in May: 53.1°F
The month with the highest average low temperature is July (69.1°F).
The coldest month (with the lowest average low temperature) is January (26.1°F).
Average pressure in May
Cos Cob, CT
- Average pressure in May: 30.01"Hg
The month with the highest atmospheric pressure is November (30.1"Hg).
The month with the lowest atmospheric pressure is June (29.93"Hg).
Average wind speed in May
Cos Cob, CT
- Average wind speed in May: 7.5mph
The windiest month (with the highest average wind speed) is January (9.9mph).
The calmest month (with the lowest average wind speed) is July (6.5mph).
Average humidity in May
Cos Cob, CT
- Average humidity in May: 75%
The months with the highest relative humidity are February, May and December (75%).
The month with the lowest relative humidity is August (71%).
Average rainfall in May
Cos Cob, CT
- Average rainfall in May: 3.11"
The wettest month (with the highest rainfall) is July (4.13").
The driest months (with the least rainfall) are January and February (2.4").
Average rainfall days in May
Cos Cob, CT
- Average rainfall days in May: 17.5 days
The month with the highest number of rainy days is July (18.1 days).
The month with the least rainy days is January (7.9 days).
Average snowfall in May
Cos Cob, CT
- Average snowfall in May: 0"
The month with the highest snowfall is February (2.52").
The months with the least snowfall are May, June, July, August, September and October (0").
Average snowfall days in May
Cos Cob, CT
- Average snowfall days in May: 0.1 days
The month with the highest number of snowfall days is January (7.2 days).
The months with the least snowfall days are June, July, August, September and October (0 days).
Average sea temperature in May
Cos Cob, CT
- Average sea temperature in May: 51.4°F
The best month for swimming (with the highest average sea temperature) is August (73.1°F).
The coldest month (with the lowest average sea temperature) is February (39.5°F).
Average daylight in May /
Average sunshine in May
Cos Cob, CT
- Average daylight in May: 14h and 3min
The month with the longest days is June (Average daylight: 15h and 6min).
The month with the shortest days is December (Average daylight: 9h and 18min).
- Average sunshine in May: 8h and 4min
The month with the most sunshine is July (Average sunshine: 10h and 30min).
The month with the least sunshine is February (Average sunshine: 4h and 42min).
Average sunshine days in May
Cos Cob, CT
- Average sunshine days in May: 11.5 days
The month with the most sunshine days is November (17.8 days).
The month with the least sunshine days is June (10.7 days).
Average UV index in May
Cos Cob, CT
- Average UV index in May: 5
The months with the highest UV index are June, July and August (UV index 6).
The months with the lowest UV index are January, February, March, November and December (UV index 2).
Average cloud cover in May
Cos Cob, CT
- Average cloud cover in May: 44
The month with the most cloud cover is December (Cloud cover 49).
The month with the least cloud cover is August (Cloud cover 31).
Average visibility in May
Cos Cob, CT
- Average visibility in May: 6mi
The months with the highest visibility are January, February, March, April, May, June, July, August, September, October, November and December (6mi).
The months with the lowest visibility are January, February, March, April, May, June, July, August, September, October, November and December (6mi).
Cos Cob, Connecticut, USA
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